A teenage swimming sensation from China was among those to set Guinness World Record benchmarks on the first full day's program at the London 2012 Olympics.
Ye Shiwen, (pictured above), stormed to gold, setting a new world record in the women's 400m medley with a time of 4 minutes 28.43 seconds at the Aquatics Centre.
Shiwen took a second off Australian defending champion Stephanie Rice's previous world's best set at Beijing 2008.
At just 16 years and 148 days she also became the youngest swimming 400 metres medley Olympic gold medallist, beating US swimmer Janet Evans's record, who was 17 years and 22 days when she achieved glory at the Seoul Games in 1988.
Elsewhere in the pool, Natalie Coughlin managed to equal fellow Americans Jenny Thompson and Dara Torres record for most Olympic swimming medals by an individual, with Coghlin picking up her 12th after earning a bronze as part of the USA's 400-meter freestyle relay team.t
While there was disappointment for home favourite Mark Cavendish in the men's cycling road race after he finished well back in the pack, the grueling ride's eventual winner Alexandre Vinokourov was able to also celebrate setting a record.
As well as taking gold, the Kazakhstan racer notched up the tite for most Olympic medals in the event with two, having taken silver at the Sydney Games in 2000.
Meanwhile, New Zealand rowing stars Eric Murray and Hamish Bond looked untouchable during the opening day of the Olympic rowing regatta.
The duo powered home during their heat in the coxless pairs by an incredible three boat lengths in a time of 6:08.50.
The scintillating performance saw them break the record for the fastest coxless pairs rowing time, set by Britain's Matthew Pinsent and James Cracknell in Seville ten years ago.
Valentina Vezzali had been hoping for an historic fourth consecutive gold medal in the women's individual fencing.
Despite having to settle for bronze behind Elisa Di Francisca (gold) and Arianna Errigo (silver) in an Italian clean sweep of the event, the 38-year-old was able to console herself having equaled Giovanni Trillini's world record for the most Olympic fencing medals won by a woman, with the pair having stepped up to the podium eight times.
Sun Yang was crowned Olympic champion in the 400m
Freestyle as he continued to leave an indelible mark on the global
The 20-year-old was second over eight lengths at the World Championships in Shanghai last year before producing a sublime 1,500m Freestyle in which he lowered Grant Hackett's long-standing world record.
Finally, striker Cristiane's late strike against New Zealand helped Brazil to a 1-0 victory at the Millennium Stadium and also increased her tally as the highest goal scorer of all time in Olympic Women's football.